
Concept explainers
(a)
Amount of radium required to produce as many decays per second.
(a)

Answer to Problem 52E
An amount of
Explanation of Solution
Nuclear reactor has accumulated radioactive waste of
Write the expression of activity
Here,
Rearrange the above expression
Since each mole of radium has mass
Substitute
Conclusion:
The value of source activity
The value of half-life
Substitute
Thus,
(b)
Rate of production of heat by reactor.
(b)

Answer to Problem 52E
The rate of production of heat by reactoris
Explanation of Solution
An energy of
Write the expression of rate of energy produced by reactor
Here,
Conclusion:
Substitute
Thus, reactor produces heat at a rate
(c)
Ratio of this power to rate of
(c)

Answer to Problem 52E
The desired power ratio is
Explanation of Solution
Write the expression of ratio
Here,
Conclusion:
Substitute
Thus, the desired power ratio is
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Chapter 31 Solutions
General Physics, 2nd Edition
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